Parks Master Plans: Cook, Fanno Creek & Summerlake CITY OF TIGARD
PARKS MASTER PLANS
Design Narrative
FOR
COOK PARK
FANNO CREEK PARK
SUMMERLAKE PARK
MURASE
associates
1300 N.W. Northrup
Portland, OR 97209
TABLE OF CONTENTS
Page No./Fig. No.
Introduction 1
Cook Park
Narrative 2 - 5
Master Plan Fig. 1
Fanno Creek Park
Narrative 6 - 10
Master Plan Fig. 2
Summerlake Park
Narrative 11 - 13
Master Plan Fig. 3
Appendixes
Appendix A: Cost Estimates
Cook Park Al - A3
Fanno Creek Park A4 - A5
Summerlake Park A6 - A7
Appendix B: Review & Permit Requirements
Cook Park B1 - B2
Fanno Creek Park B3 - B4
General Comments B5
Appendix C: Cook Park Riverfront Improvements Cl
Riverfront Plan Fig. 4
II\TRODUCTION
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Introduction
Master Plans for the City of Tigard's Cook, Fanno Creek and Summerlake Parks
have been prepared to help direct the further development of these community
recreational resources. The Master Plans have been developed through the
collaborative efforts of the Park Board, City staff and interested citizens. Facilities
and site improvements identified in the Master Plans are needed to help meet the
present and future recreational needs for the citizens of Tigard. When the plans
are implemented, both Tigard and the larger metropolitan area will benefit.
Besides helping to meet the recreational needs of the community, and preserving
important natural areas, the implementation of the Master Plans will work to
support commercial and residential development in the City. The development of
Fanno Park will directly complement anticipated improvements to the City Center.
The outdoor recreational opportunities offered in the park will attract area residents
to the Main Street area and increase their exposure to this commercial center.
Further, the park improvements will provide an attractive setting for the commercial
area, making it a more pleasant experience for shoppers and the commercial clients.
The improvements at all these parks will significantly expand the variety and
quantity of recreational facilities available for the citizens of Tigard. This expansion
of recreational opportunity will enhance the livability of the community and its
attractiveness for the area's residents.
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COOK PARK MASTER PLAN
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Cook Park Master Plan
An overall view of the Master Plan recommendations shows the recognition of three
separate and unique areas in Cook Park. The first is the upper area where the
existing Little League and soccer fields, large picnic area, playground, picnic shelter,
and restrooms are located. This is the area where the greatest variety and quantity
of recreational facilities are to be found. Presently, and as provided for in the
Master Plan, this is to be the area where the highest concentration of active
recreation will occur.
The second are the areas of natural riparian and wetland vegetation. This includes
most of the river bank, the large wooded area in the central and eastern portion
of the park and the small wetland area north of the soccer fields,. These areas are
to remain in a natural state. Only limited trail work, interpretation displays and
habitat enhancement will take place.
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The third is the riverfront around the area of the existing boat dock and launching
ramp. Presently this area is used for limited picnicking and launching of small craft
into the Tualatin River. While this is one of the few access points to this river, the
launching area is little used. Beyond these recreational uses, this area is used for
storage of surplus materials. The Master Plan calls for improvements to this area
which will significantly expand picnicking and river-oriented recreation.
Several overall objectives served to direct the development of the Master Plan for
Cook Park. The first objective was to take care of the need to update and improve
existing facilities. Existing irrigation systems, the playground, Little League fields,
and restrooms all have become worn with use and time. Rehabilitation
improvement and expansion, in the case of the playground, is needed to meet
present recreational demands.
The second objective was to provide additional recreational opportunities by adding
new facilities. A fishing area designed to accommodate the mobility handicapped,
parking, and expanded picnicking are indicated for the riverfront area. These and
the other related improvements in this area will allow for expanded and more
intensive use of the riverfront. Riverside trails and roadside bike lanes are included
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to make the park more accessible and useable by bicyclists. Additional soft trails,
trail heads and interpretative displays are included to provide for improved use of
the natural woodland area. The wetland north of the soccer fields is improved to
both provide a better edge to the park and to improve the habitat value and
potential educational uses of this site. In the upper area of the park, the expanded
playground and spray pool will greatly enhance the use of the park for families.
The bandstand and adjacent expanse of lawn will improve the park's function for
musical and other community events. The inclusion of the caretaker/gatehouse and
small utility garage will improve park security, enable the collection of entry fees (if
this becomes desirable), and improve efficiency of maintenance operations in the
park. Irrigation of all new and existing developed areas are included to both
improve park use and reduce maintenance and operational costs.
The third objective was to improve the safety and utility of the park. Improvements
to the safety of the park are to be accomplished in a number of ways. First,
rehabilitation and updating of existing facilities will eliminate potential hazards.
Second, widening of the access road to include bicycle lanes and the provision of
separate riverside trails will provide for safer use and access of the park. Finally,
realignment of the main access road to the outer edge of the most active recreation
areas will limit pedestrian crossing and other conflicts between park users and cars.
Improving the utility of the park has been accomplished by adding facilities (as
mentioned in the previous page), relocating access roadways and by regrading and
stabilizing the bank in the riverfront area. Relocating the access road occurs in
two locations. The main access road is presently located between the main picnic
and playground area at the Little League fields. This road is relocated to the north
and to the west of the Little League field, eliminating the division of the park. This
realignment allows for the redesign of this active recreation area and provides a
more supportive and complementary juxtaposing of recreational facilities. This frees
up this central area of the park, allowing for the expansion of the playground and
the addition of a spray pool, bandstand, and large lawn area to this area of the
park. This provides a central focus, unity, and organization which the park
presently lacks, improving the safety, utility and aesthetics of the park.
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Relocation of the riverfront roadway and parking to the north, away from the river's
edge, expands the useable space along the river and allows for the addition of new,
and improvements of existing facilities in that area.
The Master Plan calls for significant upgrading of the riverfront area. An improved
approach, and parking, will allow for better use of the river access ramp. Paving
of the road at the parking area will improve access. Regrading of a stretch of the
riverfront to provide for a gradual sloping "beach" will improve use by canoeists and
riverbank fishermen. Additionally, "handicapped" parking, paved walkways and a
paved river edge plaza will provide access and a fishing platform for mobility-
impaired citizens.
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The final objective has been to improve the aesthetics and other visual attributes
of Cook Park, making it a more attractive and supportive resource for the
community. Tree plantings along the main access road and in the recreation areas
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provide scale, sense of organization, and materials which will reflect the change of
the seasons. Additional native plantings along the riverfront access road and river
edge will reinforce the sense of the park's connection to the natural riparian
environment and the attractiveness of that area.
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FANNO CREEK MASTER PLAN
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Fanno Creek Park
The proposed boundaries of Fanno Creek Park lie within the 100 year floodplain
on either side of Fanno Creek between Main Street and Hall Boulevard. This site
is a segment of a proposed greenway corridor which runs the length of the Creek,
within the City of Tigard, extending downstream to the confluence with the Tualatin
River. The park's function as a part of this linear corridor, the natural
environments which make up most of the proposed park, its location in a floodway,
and it's contiguousness to both the Main Street commercial area, the Civic Center,
Senior Center and residential areas are all important factors which directed the
development of the Master Plan.
The objectives the Master Plan hopes to achieve include:
1. Public land acquisition needed to complete the securing of this
segment of the greenway and park.
2. Completion of this segment of the greenway's trail system.
3. Development of recreation areas to support activities in the Main
Street commercial area and at the Civic Center.
4. Preservation of the natural habitat corridor.
5. Improvement of the public's recognition and use of this community
recreation resource system, through the development of recreational
facilities, nature interpretative displays, and other means.
6. Identification of features and facilities in the park which are
compatible with, and tolerant of periodic flooding.
Presently, only the eastern portion of the proposed park is under public ownership.
The portion of the floodplain west of the Civic Center still needs to be placed in
public hands. In addition, a key parcel which is out of the floodplain, at the
western edge facing onto Main Street, needs to be obtained to provide adequate
visual and physical access and presence for the park in that important commercial
corridor.
An 8-foot wide paved path is called for to run the entire length of the park. This
path and smaller segments connecting it to the northern and southern edges of the
park will provide access to and through Fanno Creek Park. Creating adequate
linkage through the park is especially important because of its role in the larger
greenway trail system. To assure an adequate route for through travel, a pathway
on the southern edge of this park is shown for the segment west of the proposed
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Ash Street extension. This will be needed when the area on the north side of the
Creek is fully developed and becomes too congested to be a suitable trail route.
Providing more cultural or active recreational areas to support the Main Street
commercial area and Civic Center, and preserving the natural vegetation; leads to
the delineation of three distinct areas within the park. The first area is referred to
as the "Main Street Plaza and Water Garden." This area lies to the north of the
creekbed and extends from Main Street, east to the Ash Street extension. This area
is designed to be intensively used and programmed for a variety of recreational,
civic, and commercial functions. The ability to provide for numerous activities and
functions will make this a strong attraction for the community, serve to support the
adjacent commercial area, and meet the community's need for recreation. This site
is seen as an important part of developing the Main Street and City Center area
into an important focus for the citizens of Tigard and surrounding areas. The
elements shown in this area are designed to be integrated into the future
commercial establishments to be developed along this segment of the River.
Facing on Main Street is a paved urban plaza. Portals mark the edge of the square
and the entry to the park. Steps along the southern edge of the square lead
directly down to the creek, reinforcing the physical and visual connection of the
waterway to the park adjacent to the commercial area. In the creek, adjacent to
the plaza, water steps (small waterfalls) are indicated. These help improve water
quality and provide visual and auditory interest for the park.
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Civic Plaza at Fanno Creek
East of the plaza, in the area of the existing large open field and small existing
pond, a new large pond is shown. This pond functions as a visual focus for this
part of the park, reinforcing the water-oriented theme of the park. In addition, this
larger body of water serves to enhance the habitat diversity of the park, buffer the
natural areas from more intensively-used portions of the park and thereby support
a more stable environment for birds and other wildlife in the park. A large water
jet is indicated in the center of the pond. This, or a similar feature, functions as
a visual focus, while improving the water quality of the pond and masking sounds
from the nearby Pacific Highway.
On the northern shore, trees and green lawns lead down to the edge of the pond
where varieties of water-loving herbaceous perennials and shrubs are planted. The
theme of this area, as insinuated by the name, is that of an English water garden-
-tended, but not manicured. This informality is in place both to reinforce this
theme, and to provide a design capable of weathering periodic inundation by high
wintertime water levels.
In the middle of the north shore, an amphitheater is shown. This will provide a
location for outdoor plays, concerts, other performances, and public events.
On the eastern shore of the pond, a "Tea Garden" is indicated. This includes a tea
house and garden area where tea, and other refreshments can be served. This
location could be managed by a concessionaire for the general public and for
holding of special group meetings or receptions.
The plaza, amphitheater and "Tea Garden" are all facilities that can be programmed
and operated to generate revenue to support the maintenance and operations of the
park.
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The "Civic Center Water Garden" is the second distinct area. This area is at the
eastern end of the park, immediately south and east of the Civic Center. This is
a small area of maintained lawn, trees and water edge perennials and shrub
plantings. A pond is excavated in the location of an existing overflow channel to
create a visual focus for the area and to diversify the area's natural habitats. A
small weir is shown at the downstream edge of the pond to control summertime
water levels. An aeration spray head and pump may need to be installed in the
pond to improve water quality. In addition to the pond excavation, a small channel
is shown connecting the stream to the backwater slough adjacent to the Civic
Center. This is indicated to help improve passage for wildlife and to improve the
water quality in the backwater area.
On the edge of a second pond, a small arbor and patio are shown. This arbor and
surrounding lawn area will be used for picnic lunches and small gatherings to
complement the plaza areas at the Civic Center.
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North of the Senior Center, an area of existing canary grass is shown to be mown
to create a rough meadow to allow for the informal play activities of people in the
adjacent residential area.
The rest of the park, comprising the majority of the park area, is indicated to be
a nature preserve. Here natural vegetation and habitat areas will remain
undisturbed or altered to improve their natural character and ability to support the
area's wildlife inhabitants. This includes preservation of a large portion of the
center of the park in an undisturbed state. On the western end, adjacent to the
"Main Street Water Garden," the blackberries that crowd the Creek edge will be
removed and native trees, shrubs, grasses and herbaceous plants are called for.
This includes a planting of native materials along the southern edge of the Creek
adjacent to the plaza area. This is needed to assure a continuous corridor of _
natural vegetation along the Creek. This is important for the maintenance of
diverse and stable populations of native plants and other wildlife.
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At the eastern end of the park, at Hall Boulevard, an entry plaza with interpretative
and educational displays are indicated. This is indicated, not only to inform visitors
about the natural environs of the park, but also to call the public's attention to the
fact that Fanno Creek is a public park and nature preserve.
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SUMMERLAKE PARK MASTER PLAN
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Summerlake Park
Summerlake Park is a designated community park, located in a rapidly growing
residential area of northwest Tigard. The park is located on Summer Creek. The
proposed greenway corridor along this creek will be an important extension of the
park's recreational features. Summer Lake was formed by the damming of the
creek. The low flows of Summer Creek have led to some water quality problems
in the lake, but efforts are underway to attempt to mitigate these problems.
Presently, development of and access to the park are limited. The completion of
Winter Lake Drive will greatly improve access to the park. The program of land
acquisition and development, identified in the Master Plan, will provide the space
and facilities needed for community park activities.
The objectives for the Master Plan include:
1. Acquisition of additional lands to provide adequate buffering from
residential areas and space for needed recreational facilities.
2. Provision of recreation facilities and features needed to meet
community and neighborhood needs.
3. Preservation and enhancement of existing and potentially significant
natural areas.
Land acquisition called for by the Master Plan include the upper half of the western
end of the park, the area around the conference/reception facilities, and the
southeast portion of the park, south and east of the lakeside path. Acquisition of
these parcels will complete the enclosure of the lake, provide an amount of land
needed to provide adequate facilities, and land needed for a park-like setting for
the lake and surrounding park.
Recreation facilities indicated in the Master Plan are aimed at providing recreation
for the community as a whole, and surrounding residential areas. First of all,
Summerlake Park is a recreation "node" on the proposed Fanno Creek greenway.
When the greenway and associated trail system are completed, many of Tigard's
citizens will have safe and convenient access to the park along this route. The trail
system called for on the Master Plan will both complete the segment of the
greenway path which runs through the park, and provide facilities for popular forms
of recreation (e.g. jogging, walking, and bicycling) in the park. The paved trail
system includes roadside sidewalks, an 8-foot wide paved trail all around the lake,
and bridge over the dams and at several small stream crossings. In addition to the
paved trails, a 6-foot wide "soft" trail is indicated looping the lake. The trail runs
alongside the paved trail around the lake and conference/reception area, forming
a loop over 8/10 of a mile in length. Cutting through the middle of the loop,
11
another segment of the soft trail system runs between the existing forest and
southwest edge of the lake.
The conference/reception facilities indicated south of the forested area will provide
the community and neighborhood with flexible and attractive places for meetings
and special events. Revenues generated by this facility, if desired, can be used to
offset park operating expenses.
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At the west end of the lake, facilities typical of a small community park are called
for. These include tennis and basketball courts, playground and spray pool, large
open grassy play area, a restroom, parking lot, a picnic shelter and a picnic area
capable of handling a small group or a number of individual picnickers.
At the southeast corner of the park, an additional playground, restroom, large grassy
play area, and lakeside docks are indicated.
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Improvements needed in the park, but not shown on the Master Plan, include the
reestablishment of lawn and the installation of a new irrigation system along the
north and southeast shorelines of the park.
The specific layout, position, and variety of facilities indicated in the Master Plan
have been tailored to provide for community-wide needs in a way compatible with,
and supportive of the surrounding neighborhood area. Achieving a complimentary
relationship with the neighborhood is also accomplished by providing a shrub buffer
for the existing homes along the northern edge of the park and the future
residential area southeast of the lake. Planting of tree groupings along the
lakeshore is intended to provide screening of the residential areas, while maintaining
views onto the lake. Landscaping and mounding between the street and parking
areas will provide visual buffering of these areas for the residential areas south and
west of the park.
The large mixed evergreen and deciduous forest in the center of the park, the
islands in the lake and the lake edge itself, all provide a rich environment for
natural vegetation and wildlife. The Master Plan calls for the preservation of the
forest and adjacent lake edge wetland in their natural status. A soft surface trail
through this area will provide a pleasant exercise route, and an opportunity for
those hoping to observe wildlife up close. Enhancement of the lake edge and lake
island involves reestablishment of more natural and diverse vegetation. This
involves both the planting of native plant materials and the limiting of lake edge
mowing to allow native plants to establish themselves. The lake and woodlands are
an important link along the Fanno Creek greenway corridor. The preservation and
enhancement efforts called for by this plan will not only maintain the continuity of
this corridor, but also provide an attractive setting for the park itself.
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SUMMERLAKE PARK
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MASTER PLAN CI I Y OF TICARD,OR
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APPENDIX
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APPENDIX A
COST ESTIMATES
I. Cook Park Master Plan
Cost Estimate
January 9, 1989
A. Asphalt Trail (8' wide, 6,600 L.F.) $ 92,400
B. Concrete Walks (8' wide, 2,440 L.F.) 48,800
C. Concrete Plaza (23,000 Sq. Ft.) 34,500
D. Parking Area
1. @ Little League Field (59 cars) 50,000
2. @ Soccer Fields (98 cars) 84,000
E. Access Drive (pavement and curb)
1. 40' wide (1,600 L.F.) 152,000 -
2. 24' wide (1,060 L.F.) 63,600
3. Improve Roadway and Turnaround
@ south edge of picnic area 10,000
F. Remove and Dispose of Existing Asphalt
Pavement (47,750 Sq. Ft.) 76,000
G. Relocate Little League Fields
(backstop, player benches, fencing and
field work) 55,000
H. Shelter/Concession Stand/Restroom 150,000
I. Half Basketball Court 5,000
J. Amphitheater/Bandstand 25,000
K. Renovate Existing Restroom 40,000
L. Playground/Tot Lot 80,000
M. Spray Pool 50,000
Al
N. Soft Trail (6' wide, 1,600 L.F.) 5,600
O. Benches (15) 7,500
P. Picnic Tables (30) 15,000
Q. Irrigation
1. Existing Picnic Area (210,000 Sq.
Ft.) 63,000
2. Access Road, Parking Lot at Plaza
Area (86,000 Sq. Ft.) 25,800
3. Soccerfield Area (234,000) 70,200
R. Wetland Enhancement 30,000
S. Landscaping
1. Trees 65,000
2. Shrubs 50,000
3. Lawn (290,000 Sq. Ft.) 32,000
T. Caretaker/Gate House 80,000
U. Riverfront Improvements (to be
continued)
1. Earthwork (4,000 C.Y.) 16,000
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2. Roads
a. Paving and Base (39,000 Sq.
Ft.) 39,000
b. Curbing (2,700 L.F.) 13,500
3. Trails
a. Paved (3,600 L.F.) 50,400
b. Soft (2,000 L.F.) 7,000
4. Fishing Plaza
a. Paving 950
b. Wall 8,000
5. Back Stabilization (2,500 Sq. Ft.) 14,000
6. Irrigation 30,000
7. Landscaping 75,000
TOTAL $1,714,250
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NOTE:
1. Due to the schematic nature of plans, it may be appropriate to figure
contingency costs into the estimate of the total cost.
1.
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II. Fanno Creek Park Master Plan
Cost Estimate
January 9, 1989
i, A. Asphalt Trail (8' wide, 3,270 L.F.) $ 49,050
B. Bridge Relocation 7,500
C. General Riparian Planting 11,000
D. Path Lighting (39 each) 58,500
E. East Entry
1. Plaza Paving (1,250 Sq. Ft.) 6,250
2. Display Kiosk & Park Sign 8,000
3. Benches (4) 2,000
4. Trash Receptacles (2) 500
5. Riparian Plantings 5,000
6. Irrigation (15,000 Sq. Ft.) 10,000 -
F. Meadow Development 10,000
G. City Hall Water Garden
1. Pond Excavation 15,000
2. Wier 5,000
3. Arbor and Arbor Patio 22,000
4. Planting 22,000
5. Irrigation (33,000 Sq. Ft.) 11,000
6. Benches (7) 3,500
7. Picnic Tables (7) 3,500
H. Main Street Plaza and Water Garden
1. Plaza
a. Paving (16,800 Sq. Ft.) 67,200
b. Bollards (8) 3,200
c. Entry Portals (2) 10,000
d. Planting 20,000
e. Plaza Creekside Steps and
weirs 48,000
2. Weirs (2) 10,000
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3. Pond Excavation 85,000
4. Rough Grading 20,000
5. Irrigation 42,000
6. Planting (Water and Tea Garden)
and Lawns 142,000
7. Riparian Planting 20,000
8. South Bank Asphalt Trail (8' wide,
1,020 L.F.) 15,300
9. Tea House and Courtyard 80,000
10. Amphitheater 35,000
11. Water Jet 4,500
12. Pump at well 10,000
13. Asphalt Bicycle Path (north bank
replacement path) 10,000
TOTAL $872,000
NOTES:
1. No land acquisition costs have been added into these figures.
2. Due to the schematic nature of plans, it may be appropriate to figure
contingency costs into the estimate of the total cost.
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III. Summerlake Park Master Plan
l;.
Cost Estimate
January 9, 1989
A. Bridge @ Darn $ 47,000
B. Footbridges over Creek (3) 3,000
C. Soft Trail (6' wide, 5,470 L.F.) 20,000
D. Asphalt Trail (8' wide, 4,030 L.F.) 56,420
E. Lake Edge Landscaping and Irrigation
(area between existing walk at lake
edge on the north, east, and
southeast lake shores)
1. Riparian Plantings 8,000
2. Tree Planting 22,000
3. Lawn 16,800
4. Irrigation 35,000
F. Docks (2) 4,000
G. North Shore Property Line Shrub
Planting 8,400
H. Southeast Area
1. Playground (equipment, benches,
walk) 30,000
2. Restrooms 80,000
3. Irrigation 29,000 -
4. Lawn 13,200
5. Trees 17,000
6. Creek Planting 3,600
7. Property Line Shrub Planting 3,800
I. West End
j 1. General Site Preparation 20,000
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2. Irrigation 62,000
3. Lawn 27,600
4. Shrubs 27,000
A6
5. Trees 25,500
6. Parking Lot 20,000
7. Tennis Courts 50,000
8. Basketball Court 10,000
9. Picnic Shelter 17,000
10. Picnic Tables (20) 10,000
11. Drinking Fountains (4) 6,000
12. Benches (10) 5,000
13. Path Lighting (12) 18,000
14. Restrooms 80,000
15. Playground 60,000
16. Spray Pool 40,000
J. Conference/Reception House Area
1. Conference/Reception Building 190,000
2. Parking Lot 45,000
3. Irrigation
30,300
4. Walks 8,400
5. Patios 15,000
6. Landscaping 105,750
K. Half-Street Improvements 102,000
TOTAL $1,371,770
NOTES:
1. No land acquisition costs have been added into these figures.
2. Due to the schematic nature of plans, it may be appropriate to figure
contingency costs into the estimate of the total cost.
A7
APPENDIX B
REVIEW & PERMIT REQUIREMENTS
COOK PARK
The Cook Park Master Plan developed by Murase associates calls for some
modifications to the north bank of the Tualatin River and to a wetland area
adjacent to the existing soccer fields. The purpose of this discussion is to give a
preliminary indication of the type of improvements proposed and the procedure
necessary to accomplish the work.
The modifications to the bank of the Tualatin River will involve flattening the
gradient of the slope along a portion of the bank to allow for public access to
the river. Currently the riverbank is steep and does not lend itself to easy access
by either pedestrian or boat traffic. This improvement will provide for fishing,
canoe and handicap access to the edge of the river. The slope will require
I, treatment to guard against erosion due to changing river levels pedestrian traffic
I ' and storm runoff. Slope protection can be accomplished by using concrete
( • pavers similar to Grasscrete that allow for soil and grass to be placed in the
voids at the surface of the slope. The concrete will provide stability while the
vegetation will give an aesthetically pleasing appearance.
The improvements will require a portion of the bank area northwest of the boat
launch to be excavated and a gradual slope extended to the edge of the water.
;1 The material removed will be used in an area adjacent to the access road and
turnaround. The excavation and fill in this area will need to balance so that no
change in total flood storage volume is lost. In addition, the question of how
this excavation will affect flood flows both up and downstream of this site will
need to be addressed for the U.S. Army Corps of Engineers to evaluate the
impacts of these proposed improvements.
The approval process for this work along the Tualatin River will include a joint
submittal to the Oregon Division of State Lands and the U.S. Army Corps of
Engineers. These applications will place the proposed project into two separate
approval processes. The U.S. Army Corps of Engineers' permit will involve the
evaluation of the impact to the Tualatin River floodway and flood plain zones.
j This project is not anticipated to significantly impact the floodway or flood
plain.However, the grading will receive a close look by the Division of State
Lands. This permit will heavily involve the Oregon Division of Fish and Wildlife
which will evaluate the impacts on the riparian vegetation and the wildlife habitat
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Items required for this submittal are earthwork calculations, mapping of
proposed improvements, determination of "mean high water" and "ordinary high
water" levels, elevations or cross-section views, existing shorelines, etc. The
Division of State Lands and U.S. Army Corps of Engineers may require
additional items beyond those listed on the application, depending on public
involvement and environmental impacts to sensitive areas.
The wetland area under consideration for enhancement is just to the north of
the soccer fields. It is proposed that the wetland be excavated to provide a
deeper pond and the area planted with more diverse wetland type vegetation.
This improvement will enable the present wetland to serve a broader spectrum
of wildlife. Another benefit of this improvement will be the cleansing effect that
the pond will provide for surface water runoff from uphill development. A very
important item associated with the improvement of this wetland area will be
control of the drainage into and out of the pond and its relationship to the
overall drainage system for the park.
These improvements will require a joint permit application similar to the one
discussed as part of the riverbank improvements. The application to the Oregon
Division of State Lands and the U.S. Army Corps of Engineers will require a
description of the proposed improvements, earthwork calculations and a
preliminary planting plan utilizing plant species from the approved Oregon
Division of Fish and Wildlife plant materials list.
B2
FANNO CREEK PARK
The proposed improvements to the Fanno Creek Park include the creation of
two backwater areas. One of these is located between Main Street and the
proposed extension of Ash Street. The other is located just west of Hall
Boulevard and behind City Hall. These areas are to be controlled by weirs in
the stream channel.
The larger of the two is located between Main Street and Ash Street and will
require the diversion of water from the main stream channel into a new pond
adjacent to the creek. This pond will require aeration by use of a water spray
jet and introduction of fresh water from the Fanno Creek stream flow. This
process could possibly be supplemented during dry weather conditions by
pumping water into the pond from a proposed new well adjacent to the site.
Flow of water from Fanno Creek into the pond would be controlled by a weir in
the main stream channel, allowing normal stream flows to continue after the
pond level is reached. Careful consideration will need to be given to flood levels
and flow, both upstream and downstream, of this site so that this improvement
will not affect those flows and potentially damage adjacent properties.
Flood flow calculations completed for final design will consider the existing
channel configuration and compare its flow characteristics to those of the
proposed channel. These flow characteristics will be used to determine the flood
depth at selected points along the stream corridor during flood flows. The weirs
will be designed so that they will not create restrictions to the stream flows
during flood stage on Fanno Creek. The additional flood storage volume created
by the new backwater area will provide a significant mitigation to the weir
installation in the main channel.
The second backwater area will be formed using a weir in the main stream
channel approximately 280 feet upstream from S.W. Hall Boulevard. This pond
area will be located in the stream channel and will be much smaller in size than
the one upstream from the Ash Street crossing. Design requirements for this
weir and pond area will be the same as those discussed relative to the larger
pond. The main difference will be that this backwater area will be within the
channel and will be used to increase the wetland adjacent to the stream and to
provide a more diverse wildlife habitat.
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In all cases, the design calculations will need to show that the proposed
improvements will not alter the flood plain or the 100-year flood contours. This
will be done by designing the grading such that, for all fill within the flood plain,
there is a corresponding removal. No fill will be allowed in the floodway, and
jany structure placed within the park will need to be assessed as to its impact on
the flood flows through the stream corridor.
The permit process for this site will be the same as that for the riverbank
improvements within Cook Park. A joint permit application will need to be
made to the Oregon Division of State Lands and the U.S. Army Corps of
Engineers where equal weight will be given to the evaluation of the impact on
the flood plain, floodway and the wetland habitat. Different from the Cook Park
improvements along the Tualatin River, these proposed improvements will
heavily involve the evaluation of both the flood plain and floodway issues, as well
as the environmental concerns of those affected property owners and the Oregon
Division of Fish and Wildlife.
I
Another state permit process that will be required for the construction of these
ponds will be through the Oregon Water Resources Department. There are two
permits required for this type of improvement. First, a determination of water
rights will need to be made by a Certified Water Rights Examiner and an
affidavit filed with the state showing the water rights for these parcels of
property. Then, two permits will be required. One of these will give the right to
create the pond area and to appropriate water to fill the ponds the first time.
The second permit will allow the continual appropriation of water to maintain
the ponds. These two permits deal with the water rights for this property and
will require additional mapping to show where the property is relative to a
section corner or Donation Land Claim Line. This mapping will need to show
the point or points of water diversion from the main stream flow relative to the
reference corner or line. These permit applications will need to be prepared in
cooperation with a Water Rights Examiner and will need to be accompanied by
a certificate indicating that the property has the right to appropriate water from
Fanno Creek.
f E.
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B4
GENERAL COMMENTS
Timing for the processing of these permits range from 45 days to 8 months,
depending on the complexity of the application. The permits for Cook Park
should only take 45 days to process, unless a private party or one of the
reviewing agencies express a serious concern. Possible concerns will be relative
to wildlife habitat and damage to the existing wetland areas. In both cases, a
planting plan showing existing and final plantings would be very helpful to the
Oregon Division of Fish and Wildlife in their evaluation of the permit. If this
information is supplied to their office, it could help speed the processing of these
permits.
Improvements to Fanno Creek Park are more significant than those proposed in
Cook Park relative to the existing stream and the surrounding vegetation. These
improvements will require significant documentation for review by both the U.S.
Army Corps of Engineers and Division of State Lands. Within the Division of
State Lands' review process, the Oregon Division of Fish and Wildlife will have
the heaviest involvement. Although the proposed improvements are extensive,
this permit should only require a maximum of 45 to 60 days to process.
This proposal will make improvements to the Fanno Creek flood plain and
floodway requiring careful documentation and design to verify that the changes in
the channel will not change the flood flow velocity or depth, either upstream or
downstream from the park. Because of the complexity of these proposed
improvements, we would anticipate that the U.S. Army Corps of Engineers'
permit will be more time consuming. Depending on the level of detail required
from the U.S. Army Corps of Engineers' office, this permit could take up to 4 to
6 months to process.
The Water Resources Department permits could be the most time consuming of
all because of the backlog of work due to recent changes in Oregon State Law.
This new law requires all subdivisions of land to have their water rights
established prior to recording. The Water Resources Department does not have
a very large staff and therefore this last year has had trouble processing all the
applications in a timely manner. This may change as their department is able to
shift some of the workload to outside consultants. This application could take 6
months or longer, depending on the Water Resources Department's workload at
the time the submittal is made.
It should be noted that all permit applications could be processed simultaneously.
This may help the agencies to coordinate their review and thereby speed the
permit process.
B5
APPENDIX C
Cook Park Riverfront Improvements
Additional work was done to refine the design of the improvements to the
riverfront boat launch area at Cook Park.
This area is one of the few access points to the Tualatin River and improving
this area is seen as a way to expand recreational use of this river. Presently, the
steep riverbank, limited developed area, and poor parking inhibit this area's
usefulness.
A number of refinements were identified by these efforts. First a fishing plaza
and paved walkway were added to provide access to the river edge for the area's
mobility-impaired citizens. The dock was relocated closer to the boat launch
area to make it easier for for people to launch their boats from this ramp. The
eastern end of the road was curved further to the north to provide more grassy
sloped areas adjacent to the river. Finally, the boat launching and parking areas
were revised to eliminate unneeded road crossing by the riverfront trail.
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